the 2010 explosion marked the worst coal mining disaster in 40 years. a new investigation says the obama administration cast aside the results of a probe into the effects of gas drilling on drinking water following pressure from the drilling company. the associated press reports the environmental protection agency issued an emergency order in 2010 saying a texas well saturated with flammable methane posed an immediate risk to homeowners. regulators had scientific evidence against the driller, range resources, but backed down after the company threatened not to operate the national study on the drilling process known as fracking. the threats prompted the agency to set aside their investigation, which found drilling could in fact have contaminated the water. one of the affected homeowners said his drinking water is so laced with methane that he can set it on fire. steve lipsky said -- a u.s. soldier accused of massacring 16 afghan civilians in march has been ordered to undergo a sanity review before his lawyers can wage a defense based on his mental healt